add array_realloc

src/safe_array.c

@@ -42,6 +42,25 @@ array_t array_move(array_t* initial, size_t move)
     };
 }
 
+array_t *array_realloc(array_t* arr, size_t rows)
+{
+    if (!arr)
+    {
+        fprintf(stderr, "%s: ptr dereferences to NULL\n", __func__);
+        return NULL;
+    }
+
+    array_t *new_arr = realloc(arr, sizeof(array_t) + (arr->size * rows - 1));
+    if (!new_arr)
+    {
+        fprintf(stderr, "%s: Failed to reallocate memory for array", __func__);
+        return NULL;
+    }
+
+    new_arr->rows = rows;
+    return new_arr;
+}
+
 size_t array_get_rows(array_t *arr)
 {
     if (!arr)

src/safe_array.h

@@ -54,6 +54,14 @@ array_t *array_init(size_t size, size_t rows);
  */
 array_t array_move(array_t* initial, size_t move);
 
+/**
+ * @brief This function reallocates the safe array
+ * 
+ * @param arr The pointer to the safe array struct
+ * @param rows The number of rows to reallocate
+ */
+array_t *array_realloc(array_t* arr, size_t rows);
+
 /**
  * @brief This function gets the number of rows in the safe array
  * 

tests/safe_array.cpp

@@ -39,6 +39,21 @@ TEST(array, array_move)
     array_free(x);
 }
 
+TEST(array, array_realloc)
+{
+    array_t* x = array_init(sizeof(double), 2);
+    ARRAY_GET(x, 0, double) = 1;
+    ARRAY_GET(x, 1, double) = 2;
+
+    array_t* y = array_realloc(x, 3);
+    EXPECT_EQ(array_get_rows(y), 3);
+    EXPECT_EQ(ARRAY_GET(y, 0, double), 1);
+    EXPECT_EQ(ARRAY_GET(y, 1, double), 2);
+    EXPECT_EQ(ARRAY_GET(y, 2, double), 0);
+
+    array_free(y);
+}
+
 TEST(array, Get_Set_array)
 {
     array_t* x  = array_init(sizeof(double), 2);